Four universes, similar in some ways, and very different in others, are linked by an angry presence in their multiverse. 28 people and two monsters are brought together in a ploy to draw out an ancient entity from long ago.
Gravity Falls, a town full of strange creature and people who live their normal life. But before the sunset, the town's life stop and all the people enclose themselves in their home for be protect from the vampires who lives in the forest.
One night a human was walking in the forest but they weren't alone. Someone was watching.
Run, run fast, because only a deal could save you.